CN114481464A - Driving mechanism and overedger - Google Patents

Abstract

The invention provides a driving mechanism and a overedger, wherein the driving mechanism comprises: the first transmission assembly is at least partially movably arranged so as to drive the pressure lifting component to lift; the second transmission assembly is at least partially movably arranged so as to drive the wire cutting component to fall; the first pushing component is in transmission connection with the first transmission component so as to drive the first transmission component to move; the second pushing component is in transmission connection with the second transmission component so as to drive the second transmission component to move; the driving part is provided with a rotatable output shaft, and the first pushing part and the second pushing part are both arranged on the output shaft to rotate under the driving of the driving part. The hemming machine has the advantages that the lifting and pressing action of the lifting and pressing component and the trimming action of the trimming component can be realized by arranging the driving component, so that the driving mechanism is simple in structure, and the problem that the overall structure of the hemming machine in the prior art is complex is solved.

Description

Driving mechanism and overedger

Technical Field

The invention relates to the field of overedger equipment, in particular to a driving mechanism and an overedger.

Background

The overedger can be used for edge covering and can also be applied to sewing fabrics. The overlock sewing machine with the automatic thread trimming function and the automatic presser foot lifting function has high processing efficiency.

In the prior art, two independent driving components are usually adopted for the overedger to respectively drive the thread trimming component to perform thread trimming action and drive the pressure lifting component to perform pressure lifting action, so that the overedger has the problems of complex integral structure and large integral volume.

Disclosure of Invention

The invention mainly aims to provide a driving mechanism and an overedger, and aims to solve the problem that the overedger in the prior art is complex in overall structure.

In order to achieve the above object, according to one aspect of the present invention, there is provided a drive mechanism including: at least part of the first transmission component is movably arranged to drive a pressure lifting component of the overedger to lift; at least part of the second transmission component is movably arranged to drive the thread cutting part of the overedger to fall; the first pushing component is in transmission connection with the first transmission assembly so as to drive the first transmission assembly to move; the second pushing component is used for being in transmission connection with the second transmission assembly so as to drive the second transmission assembly to move; the driving part is provided with a rotatable output shaft, and the first pushing part and the second pushing part are both arranged on the output shaft to rotate under the driving of the driving part.

Furthermore, the first pushing component is a first transmission cam which is sleeved on the output shaft so as to push the first transmission assembly to move through the first transmission cam; and/or the second pushing component is a second transmission cam, and the second transmission cam is sleeved on the output shaft so as to push the second transmission component to move through the second transmission cam.

Further, the outer peripheral surface of the first transmission cam comprises a first outer peripheral surface part which is used for contacting with at least part of the first transmission component so as to push the first transmission component to move; the first outer peripheral surface part is provided with an initial end and a pushing end, and the first outer peripheral surface part is gradually far away from the central axis of the first transmission cam from the initial end of the first outer peripheral surface part to the direction of the pushing end of the first outer peripheral surface part; and/or the outer peripheral surface of the second transmission cam comprises a second outer peripheral surface part, and the second outer peripheral surface part is used for contacting at least part of the second transmission assembly so as to push the second transmission assembly to move; the second outer peripheral surface portion is provided with an initial end and a pushing end, and the second outer peripheral surface portion is gradually far away from the central axis of the second transmission cam from the initial end of the second outer peripheral surface portion to the direction of the pushing end of the second outer peripheral surface portion.

Furthermore, the outer peripheral surface of the first transmission cam comprises a first outer peripheral surface part and a third outer peripheral surface part, the third outer peripheral surface part is a part of the first cylindrical surface, and the first outer peripheral surface part is positioned on the outer side of the first cylindrical surface; the first outer peripheral surface part is used for contacting at least part of the first transmission component so as to push the first transmission component to move; and/or the outer peripheral surface of the second transmission cam comprises a second outer peripheral surface part, a fourth outer peripheral surface part and a fifth outer peripheral surface part, wherein the fourth outer peripheral surface part is a part of a second cylindrical surface, the fifth outer peripheral surface part is a part of a third cylindrical surface, and the third cylindrical surface is positioned on the outer side of the second cylindrical surface; the second outer peripheral surface part is located between the fourth outer peripheral surface part and the fifth outer peripheral surface part, and the second outer peripheral surface part is used for contacting with at least part of the second transmission assembly so as to push the second transmission assembly to move.

Furthermore, the first transmission assembly comprises a first swing rod and a first contact part, and the second end of the first swing rod is connected with the pressure lifting component; the first contact part is connected with the first end of the first swing rod and is used for being in contact with the first transmission cam, so that the first transmission cam pushes the first contact part to move, and the first swing rod drives the pressure lifting component to lift; and/or the second transmission assembly comprises a swinging component and a second contact part, the swinging component is connected with the second contact part and the thread cutting component, and the second contact part is used for being in contact with the second transmission cam so that the second transmission cam pushes the second contact part to move, and then the swinging component is driven to swing to drive the thread cutting component to fall.

Furthermore, the first transmission assembly also comprises a first elastic piece, and the first elastic piece is connected with the first swing rod and is used for being fixedly connected with the installation base so as to enable the first contact part to be kept in contact with the peripheral surface of the first transmission cam under the action of the elastic force of the first elastic piece; and/or the second transmission assembly further comprises a second elastic piece, the second elastic piece is connected with the swinging component and is fixedly connected with the installation base, so that the second contact part is kept in contact with the outer peripheral surface of the second transmission cam under the action of the elastic force of the second elastic piece.

Furthermore, the first elastic part is a torsion spring, one elastic arm of the first elastic part is connected with the first swing rod, and the other elastic arm of the first elastic part is used for being fixedly connected with the installation foundation; and/or the second elastic piece is a torsion spring, one elastic arm of the second elastic piece is connected with the swinging component, and the other elastic arm of the second elastic piece is fixedly connected with the installation foundation.

Further, the swing member includes: the first end of the second swing rod is connected with the second contact part, and the second end of the second swing rod is rotatably connected with the swinging block; the thread cutting component is connected with the swinging block so as to drive the swinging block to swing when the second swinging rod swings, and further drive the thread cutting component to fall.

Furthermore, a shaft body part is arranged on the swinging block, a transmission groove is formed in the second end of the second swinging rod, and the second swinging rod is rotatably sleeved on the shaft body part through the transmission groove.

Further, the second swing link includes: the first rod section, the second rod section and the sleeve portion are located between the first rod section and the second rod section, and the first rod section and the second rod section are connected with the sleeve portion; the first rod section is used for being connected with the second contact part, and the second rod section is used for being rotatably connected with the swinging block; the sleeve part is rotationally sleeved on the supporting column, and the supporting column is fixedly arranged on the installation foundation.

According to another aspect of the present invention, there is provided an overlock machine comprising a lifting member, a thread cutting member and the drive mechanism described above.

By applying the technical scheme of the invention, the driving mechanism comprises a first transmission assembly, a second transmission assembly, a first pushing component, a second pushing component and a driving component, wherein an output shaft of the driving component is rotatably arranged, and the first pushing component and the second pushing component are both arranged on the output shaft so as to rotate under the driving of the driving component; the first pushing component is in transmission connection with the first transmission component, and the first transmission component is connected with the pressure lifting component of the overedger, so that the first pushing component can drive the first transmission component to move in the rotating process of the first pushing component along with the output shaft, the pressure lifting component is further driven to perform lifting action, and the lifting action of the pressure lifting component is further realized by realizing the lifting action of the pressure lifting component; the second pushing component is in transmission connection with the second transmission component, and the second transmission component is connected with the thread cutting component of the overedger, so that the second pushing component can drive the second transmission component to move in the rotating process of the second pushing component along with the output shaft, the thread cutting component is driven to fall, and the thread cutting action of the thread cutting component is realized by realizing the falling action of the thread cutting component; therefore, the driving mechanism can realize the lifting and pressing action of the lifting and pressing part and the thread cutting action of the thread cutting part by arranging one driving part, so that the structure of the driving mechanism is simplified, the overall structure of the overedger with the driving mechanism is further simplified, and the problem that the overall structure of the overedger in the prior art is complex is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of an overlock machine according to the present invention;

FIG. 2 shows an enlarged view at H of the overlock machine of FIG. 1;

fig. 3 shows a schematic view of the first transmission cam of the drive mechanism according to the invention;

fig. 4 shows a schematic representation of the construction of a second transmission cam of the drive mechanism according to the invention.

Wherein the figures include the following reference numerals:

100. a drive mechanism;

10. a drive member; 11. an output shaft;

20. a first drive cam; 21. a first outer peripheral surface portion; 22. a third outer peripheral surface portion;

30. a second drive cam; 31. a second outer peripheral surface portion; 32. a fourth outer peripheral surface portion; 33. a fifth outer peripheral surface portion;

40. a first transmission assembly; 41. a first swing link; 42. a first contact portion; 43. a first elastic member;

50. a second transmission assembly; 51. a second swing link; 512. a second pole segment; 513. a sleeve portion; 514. a transmission groove; 515. a third pole segment; 52. a second contact portion; 53. a second elastic member; 55. a swing block; 56. a shaft portion;

210. a pressure raising member; 220. a thread trimming member; 230. connecting the shaft sleeve; 240. a presser foot shaft; 250. a lifting and pressing support member; 270. and (4) a support column.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention provides a driving mechanism 100, please refer to fig. 1 to 4, the driving mechanism 100 includes a first transmission assembly 40, a second transmission assembly 50, a first pushing member, a second pushing member and a driving member 10, at least a part of the first transmission assembly 40 is movably arranged to drive a lifting member 210 of a overedger to perform a lifting action; at least part of the second transmission assembly 50 is movably arranged to drive the thread cutting part 220 of the overedger to perform a falling action; the first pushing component is used for being in transmission connection with the first transmission assembly 40 so as to drive the first transmission assembly 40 to move; the second pushing component is used for being in transmission connection with the second transmission component 50 so as to drive the second transmission component 50 to move; the driving member 10 has a rotatable output shaft 11, and the first urging member and the second urging member are each provided on the output shaft 11 to be rotated by the driving member 10.

In the driving mechanism 100 of the present invention, the driving mechanism 100 includes a first transmission assembly 40, a second transmission assembly 50, a first pushing member, a second pushing member and a driving member 10, an output shaft 11 of the driving member 10 is rotatably disposed, and the first pushing member and the second pushing member are both disposed on the output shaft 11 to rotate under the driving of the driving member 10; because the first pushing component is in transmission connection with the first transmission component 40, and the first transmission component 40 is connected with the pressure lifting component 210 of the overedger, the first pushing component can drive the first transmission component 40 to move in the rotating process of the first pushing component along with the output shaft 11, so as to drive the pressure lifting component 210 to perform lifting action, and the lifting action of the pressure lifting component 210 is realized by realizing the lifting action of the pressure lifting component 210; because the second pushing component is in transmission connection with the second transmission component 50, and the second transmission component 50 is connected with the thread cutting component 220 of the overedger, the second pushing component can drive the second transmission component 50 to move in the rotating process of the second pushing component along with the output shaft 11, so as to drive the thread cutting component 220 to fall, and the thread cutting action of the thread cutting component 220 is realized by realizing the falling action of the thread cutting component 220; it can be seen that, the driving mechanism 100 can realize the lifting and pressing action of the lifting and pressing part 210 and the thread trimming action of the thread trimming part 220 by arranging one driving part 10, so that the structure of the driving mechanism 100 is simplified, the overall structure of the overedger with the driving mechanism 100 is further simplified, the problem that the overall structure of the overedger in the prior art is complex is solved, and the overall manufacturing cost of the overedger is reduced.

Alternatively, the driving part 10 is a stepping motor.

In this embodiment, the first pushing component is a first transmission cam 20, and the first transmission cam 20 is sleeved on the output shaft 11 to push the first transmission assembly 40 to move through the first transmission cam 20; that is, during the rotation of the first transmission cam 20, the first transmission cam 20 can push the first transmission assembly 40 to move.

Specifically, the outer peripheral surface of the first transmission cam 20 includes a first outer peripheral surface portion 21, and the first outer peripheral surface portion 21 is used for contacting at least part of the first transmission assembly 40 to push the first transmission assembly 40 to move; wherein the first outer peripheral surface portion 21 has an initial end and a pushing end, and the first outer peripheral surface portion 21 is gradually away from the central axis of the first transmission cam 20 in a direction from the initial end of the first outer peripheral surface portion 21 to the pushing end thereof. As shown in fig. 3, a shown in fig. 3 is an initial end of the first outer peripheral surface portion 21, and B shown in fig. 3 is a pushing end of the first outer peripheral surface portion 21.

In a specific implementation process, the first transmission cam 20 has a first position and a second position relative to the first transmission assembly 40, when the first transmission cam 20 is located at the first position, an initial end of the first outer circumferential surface portion 21 is in contact with at least a part of the first transmission assembly 40, and when the first transmission cam 20 rotates to the second position, a pushing end of the first outer circumferential surface portion 21 is in contact with at least a part of the first transmission assembly 40, so that in a process that the first transmission cam 20 rotates from the first position to the second position, the first transmission assembly 40 is pushed to move, and the pressure raising component 210 is further driven to be gradually raised; in the process of rotating the first transmission cam 20 from the second position to the first position, the first transmission assembly 40 gradually returns to its original position, and further drives the pressure lifting member 210 to gradually press down, so as to realize the pressure lifting action of the pressure lifting member 210.

Specifically, the outer peripheral surface of the first transmission cam 20 includes a first outer peripheral surface portion 21 and a third outer peripheral surface portion 22, the third outer peripheral surface portion 22 is a part of a first cylindrical surface, and the first outer peripheral surface portion 21 is located outside the first cylindrical surface; the first outer peripheral surface portion 21 is an outer peripheral surface of a boss portion of the first transmission cam 20.

It should be noted that the maximum height that the lifting member 210 can be lifted can be adjusted by adjusting the vertical distance between the pushing end and the initial end of the first outer peripheral surface portion 21; wherein the vertical distance between the pushing end and the initial end of the first outer peripheral surface portion 21 is a distance in the radial line direction of the first cylindrical surface.

In a specific use process, the rotation angle of the first transmission cam 20 from the first position to the second position thereof can be controlled by controlling the rotation angle of the output shaft 11 of the driving member 10, so as to control the lifting height of the lifting member 210.

Optionally, the first drive cam 20 is of an integrally formed construction.

In this embodiment, the second pushing component is a second transmission cam 30, and the second transmission cam 30 is sleeved on the output shaft 11 to push the second transmission assembly 50 to move through the second transmission cam 30; that is, during the rotation of the second transmission cam 30, the second transmission cam 30 can push the second transmission assembly 50 to move.

Specifically, the outer peripheral surface of the second transmission cam 30 includes a second outer peripheral surface portion 31, and the second outer peripheral surface portion 31 is used for contacting at least part of the second transmission assembly 50 to push the second transmission assembly 50 to move; wherein the second outer peripheral surface portion 31 has an initial end and a pushing end, and the second outer peripheral surface portion 31 gradually gets away from the central axis of the second transmission cam 30 from the initial end of the second outer peripheral surface portion 31 to the direction of the pushing end thereof. As shown in fig. 4, a point C shown in fig. 4 is an initial end of the second outer circumferential surface part 31, and a point D shown in fig. 4 is a pushing end of the second outer circumferential surface part 31.

In a specific implementation process, the second transmission cam 30 has a third position and a fourth position opposite to the second transmission assembly 50, when the second transmission cam 30 is located at the third position, the initial end of the second outer circumferential surface 31 contacts at least part of the second transmission assembly 50, and when the second transmission cam 30 rotates to the fourth position, the pushing end of the second outer circumferential surface 31 contacts at least part of the second transmission assembly 50, so that in the process that the second transmission cam 30 rotates from the third position to the fourth position, the second transmission assembly 50 is pushed to move, and the thread trimming component 220 is driven to gradually fall down; during the rotation of the second driving cam 30 from its fourth position to its third position, the second driving assembly 50 gradually returns to its original position, and the trimming member 220 is gradually lifted.

Specifically, the outer peripheral surface of the second transmission cam 30 includes a second outer peripheral surface portion 31, a fourth outer peripheral surface portion 32, and a fifth outer peripheral surface portion 33, the fourth outer peripheral surface portion 32 being a part of a second cylindrical surface, the fifth outer peripheral surface portion 33 being a part of a third cylindrical surface, the third cylindrical surface being located outside the second cylindrical surface; the second outer circumferential surface portion 31 is located between the fourth outer circumferential surface portion 32 and the fifth outer circumferential surface portion 33, so that the fourth outer circumferential surface portion 32 and the fifth outer circumferential surface portion 33 are connected by the second outer circumferential surface portion 31.

It should be noted that the highest raised position of the thread trimming member 220 after being raised can be adjusted by adjusting the vertical distance between the pushing end and the initial end of the second outer circumferential surface portion 31; wherein the vertical distance between the pushing end and the initial end of the second outer peripheral surface portion 31 is a distance in the radial line direction of the second cylindrical surface or the third cylindrical surface.

In a specific use process, the rotation angle of the output shaft 11 of the driving member 10 can be controlled to control the rotation angle of the second transmission cam 30 from the third position to the fourth position thereof, so as to control the lifting position of the thread cutting member 220.

Alternatively, the second drive cam 30 is an integrally formed structure.

Optionally, the thread cutting component 220 is a cutter, another fixed knife matched with the thread cutting component 220 is further disposed on the overedger, the fixed knife is fixedly disposed and located at the lower side of the thread cutting component 220, and when the thread cutting component 220 falls to a designated position, thread cutting can be performed through the cutting edge of the thread cutting component 220 and the cutting edge of the fixed knife.

In a specific use process, when the output shaft 11 of the driving part 10 drives the first transmission cam 20 to rotate between the first position and the second position, the fourth outer circumferential surface portion 32 or the fifth outer circumferential surface portion 33 of the second transmission cam 30 contacts at least part of the second transmission assembly 50; that is, the second transmission cam 30 does not drive the trimming member 220 to fall or lift during the process that the first transmission cam 20 drives the lifting member 210 to lift or press down. The third outer peripheral surface portion 22 is in contact with at least part of the first transmission assembly 40 when the output shaft 11 of the driving member 10 drives the second transmission cam 30 to rotate between the third position and the fourth position thereof; that is, the first transmission cam 20 does not drive the lifting member 210 to lift or press down during the process that the second transmission cam 30 drives the thread cutting member 220 to fall or lift.

Optionally, during the forward rotation (or reverse rotation) of the output shaft 11, the first transmission cam 20 is driven to rotate from the first position to the second position; during the reverse rotation (or forward rotation) of the output shaft 11, the second transmission cam 30 is driven to rotate from the third position to the fourth position.

In the present embodiment, the first transmission assembly 40 includes a first swing link 41 and a first contact portion 42, and a second end of the first swing link 41 is connected to the pressure raising member 210; the first contact portion 42 is connected to a first end of the first swing link 41 and is configured to contact the first transmission cam 20, so that the first transmission cam 20 pushes the first contact portion 42 to move, and the first swing link 41 drives the lifting member 210 to lift. That is, the first outer peripheral surface portion 21 comes into contact with the first contact portion 42 to urge the first contact portion 42 to move.

Alternatively, the first contact portion 42 is located below the first transmission cam 20; in the process that the first transmission cam 20 rotates from the first position to the second position thereof, the first transmission cam 20 pushes the first contact portion 42 to move downwards, so as to drive the first end of the first swing link 41 to move downwards; when the first end of the first swing link 41 moves downward, the second end of the first swing link 41 moves upward, and further drives the lifting member 210 to be gradually lifted. In the process that the first transmission cam 20 rotates from the second position to the first position, the first contact portion 42 returns to the original position, that is, the first contact portion 42 moves upward to return to the original position, so as to drive the first end of the first swing link 41 to move upward; when the first end of the first swing link 41 moves upward, the second end of the first swing link 41 moves downward, and then the pressing member 210 is driven to move downward to realize the pressing action.

In this embodiment, the second transmission assembly 50 includes a swinging member and a second contact portion 52, the swinging member is connected to both the second contact portion 52 and the thread cutting member 220, and the second contact portion 52 is configured to contact the second transmission cam 30, so that the second transmission cam 30 pushes the second contact portion 52 to move, and further drives the swinging member to swing, so as to drive the thread cutting member 220 to fall. That is, the second outer circumferential surface portion 31 comes into contact with the second contact portion 52 to push the second contact portion 52 to move.

Specifically, the swinging member includes a second swinging rod 51 and a swinging block 55, a first end of the second swinging rod 51 is connected with the second contact portion 52, and a second end of the second swinging rod 51 is rotatably connected with the swinging block 55; the thread trimming unit 220 is connected to the swing block 55 to drive the swing block 55 to swing when the second swing link 51 swings, so as to drive the thread trimming unit 220 to fall.

Optionally, the second contact portion 52 is located below the second drive cam 30; in the process that the second transmission cam 30 rotates from the third position to the fourth position, the second transmission cam 30 pushes the second contact part 52 to move downwards, so as to drive the first end of the second swing link 51 to move downwards; when the first end of the second swing link 51 moves downward, the second end of the second swing link 51 moves upward to drive the swing block 55 to swing, and further drive the thread trimming member 220 to fall. In the process that the second transmission cam 30 rotates from the fourth position to the third position, the second contact portion 52 returns to the original position, that is, the second contact portion 52 moves upward to return to the original position, so as to drive the first end of the second swing link 51 to move upward; when the first end of the second swing link 51 moves upward, the second end of the second swing link 51 moves downward to drive the swing block 55 to swing in the opposite direction, so as to drive the trimming member 220 to be lifted.

Specifically, the swinging block 55 is provided with a shaft portion 56, the second end of the second swinging rod 51 is provided with a transmission groove 514, and the second swinging rod 51 is rotatably sleeved on the shaft portion 56 through the transmission groove 514, so that when the second end of the second swinging rod 51 moves upwards or downwards, the swinging block can rotate. For example, when the second end of the second swing link 51 moves upward, the swing block rotates clockwise as shown in fig. 2, and further drives the thread trimming member 220 to fall; when the second end of the second swing link 51 moves downward, the swing block rotates counterclockwise as shown in fig. 2, and the trimming member 220 is lifted.

Specifically, the second transmission assembly 50 further includes a connecting rod, both ends of which are connected to the thread cutting member 220 and the swing block 55, respectively.

In this embodiment, the first transmission assembly 40 further includes a first elastic member 43, the first elastic member 43 is connected to the first swing link 41 and is configured to be fixedly connected to the mounting base, so that the first contact portion 42 is kept in contact with the outer peripheral surface of the first transmission cam 20 under the elastic force of the first elastic member 43; thus, the first contact portion 42 can be kept in contact with the first outer peripheral surface portion 21 by the elastic force of the first elastic member 43; so that the first swing link 41 drives the first contact portion 42 to return to the original position of the first contact portion 42 under the elastic force of the first elastic member 43 in the process of rotating the first transmission cam 20 from the second position to the first position.

In addition, when the output shaft 11 of the driving member 10 drives the second transmission cam 30 to rotate between the third position and the fourth position, the third outer peripheral surface portion 22 can be kept in contact with the first contact portion 42, so that the generation of large impact noise can be avoided.

Specifically, the first elastic element 43 is a torsion spring, one elastic arm of the first elastic element 43 is connected to the first swing link 41, and the other elastic arm of the first elastic element 43 is used for being fixedly connected to the installation base.

Specifically, the overedger having the present driving mechanism 100 further includes a coupling assembly disposed between the lift-pressing member 210 and the second end of the first swing link 41, so that the second end of the first swing link 41 is coupled to the lift-pressing member 210 through the coupling assembly.

Specifically, the connecting assembly includes a connecting shaft sleeve 230, and two ends of the connecting shaft sleeve 230 are respectively connected to the second end of the first swing link 41 and the pressure raising member 210; the connecting assembly further includes a presser foot shaft 240 and a pressure raising and supporting member 250, the second end of the first swing link 41, the connecting bushing 230, the presser foot shaft 240 and the pressure raising and supporting member 250 are sequentially connected, and the pressure raising and supporting member 210 is disposed on the pressure raising and supporting member 250.

Optionally, the first contact portion 42 is arranged on the first swing link 41 in a penetrating manner; the second end of the first swing link 41 has a sleeving hole, and the first swing link 41 is sleeved on the connecting shaft sleeve 230 through the sleeving hole.

Optionally, when the first elastic element 43 is a torsion spring, the ends of the two elastic arms of the first elastic element 43 are both in a hook shape, one of the elastic arms of the first elastic element 43 is hooked under the first swing link 41, and the other elastic arm of the first elastic element 43 is hooked on the installation base; the main body of the first elastic member 43 is fitted over the coupling sleeve 230.

In this embodiment, the second transmission assembly 50 further includes a second elastic member 53, the second elastic member 53 is connected to the swinging member and is configured to be fixedly connected to the mounting base, so that the second contact portion 52 is kept in contact with the outer peripheral surface of the second transmission cam 30 under the elastic force of the second elastic member 53; thus, the second contact portion 52 can be kept in contact with the second outer circumferential surface portion 31 by the elastic force of the second elastic member 53; so that the swinging member drives the second contact portion 52 to return to the original position of the second contact portion 52 under the elastic force of the second elastic member 53 in the process that the second transmission cam 30 rotates from its fourth position to its third position.

In addition, when the output shaft 11 of the driving member 10 drives the first transmission cam 20 to rotate between the first position and the second position, the fourth outer peripheral surface portion 32 or the fifth outer peripheral surface portion 33 can be kept in contact with the second contact portion 52, so that the generation of large impact noise can be avoided.

It should be noted that, by providing the first elastic member 43 and the second elastic member 53, only the electric power capable of driving the output shaft 11 of the driving member 10 to rotate may be provided, and the extra electric power required for returning the first contact portion 42 and the second contact portion 52 to their original positions does not need to be provided, which effectively saves electric energy.

Specifically, the second elastic member 53 is a torsion spring, one elastic arm of the second elastic member 53 is connected to the swinging component, and the other elastic arm of the second elastic member 53 is used for being fixedly connected to the mounting base. More specifically, one elastic arm of the second elastic member 53 is connected to the second swing link 51.

Specifically, the second swing link 51 includes a first link segment, a second link segment 512, and a sleeve portion 513, the sleeve portion 513 is located between the first link segment and the second link segment 512, and the first link segment and the second link segment 512 are both connected with the sleeve portion 513; a first lever segment for connection to the second contact part 52, a second lever segment 512 for rotatable connection to the pivot piece 55; the sleeve portion 513 is rotatably sleeved on the supporting column 270, so that the second swing link 51 can rotate around the supporting column 270; the support column 270 is fixedly disposed on the mounting base.

Specifically, a first end of the first rod segment is connected with the second contact portion 52, and a second end of the first rod segment is connected with the sleeve portion 513; the first end of the second rod segment 512 is connected to the sleeve portion 513, and the second end of the second rod segment 512 is rotatably connected to the swing block 55.

Optionally, the second swing link 51 further comprises a third rod segment 515, the third rod segment 515 being located between the second contact portion 52 and the first rod segment, such that the second contact portion 52 and the first rod segment are connected by the third rod segment 515.

Optionally, when the second elastic element 53 is a torsion spring, the ends of the two elastic arms of the second elastic element 53 are both in a hook shape, one of the elastic arms of the second elastic element 53 is hooked on the swinging component, and the other elastic arm of the second elastic element 53 is hooked on the installation base; the main body portion of the second elastic member 53 is fitted around the outside of the sleeve portion 513.

Alternatively, the first contact surface of the first contact portion 42 for contact with the first transmission cam 20 is a cylindrical surface; in particular, the first contact portion 42 is a cylindrical structure, at least part of the cylindrical surface of which forms the first contact surface.

Or the first contact surface is a curved surface which takes a preset arc line as a generatrix and enables the preset arc line to rotate around a preset axis for one circle; preferably, the first contact surface is spherical.

Alternatively, the second contact surface of the second contact portion 52 for contacting the second transmission cam 30 is a curved surface which is generated by taking a predetermined arc line as a generatrix and rotating the predetermined arc line by one rotation around a predetermined axis; preferably, the second contact surface is spherical.

Or the second contact surface is a cylindrical surface; in particular, the second contact portion 52 is a cylindrical structure, at least part of the cylindrical surface of which forms the second contact surface.

The invention also provides an overlock sewing machine, which comprises a lifting and pressing part 210, a thread cutting part 220 and the driving mechanism 100 as shown in figures 1 to 4.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

in the driving mechanism 100 of the present invention, the driving mechanism 100 includes a first transmission assembly 40, a second transmission assembly 50, a first pushing member, a second pushing member and a driving member 10, an output shaft 11 of the driving member 10 is rotatably disposed, and the first pushing member and the second pushing member are both disposed on the output shaft 11 to rotate under the driving of the driving member 10; because the first pushing component is in transmission connection with the first transmission component 40, and the first transmission component 40 is connected with the pressure lifting component 210 of the overedger, the first pushing component can drive the first transmission component 40 to move in the rotating process of the first pushing component along with the output shaft 11, so as to drive the pressure lifting component 210 to perform lifting action, and the lifting action of the pressure lifting component 210 is realized by realizing the lifting action of the pressure lifting component 210; because the second pushing component is in transmission connection with the second transmission component 50, and the second transmission component 50 is connected with the thread cutting component 220 of the overedger, the second pushing component can drive the second transmission component 50 to move in the rotating process of the second pushing component along with the output shaft 11, so as to drive the thread cutting component 220 to fall, and the thread cutting action of the thread cutting component 220 is realized by realizing the falling action of the thread cutting component 220; it can be seen that, the driving mechanism 100 can realize the lifting and pressing action of the lifting and pressing member 210 and the thread trimming action of the thread trimming member 220 by arranging one driving member 10, so that the structure of the driving mechanism 100 is simplified, the overall structure of the overedger with the driving mechanism 100 is further simplified, and the problem that the overall structure of the overedger in the prior art is relatively complex is solved.

The overedger of the present invention comprises the drive mechanism 100 described above, and therefore has at least the same technical effects as the drive mechanism 100.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A drive mechanism, comprising:

the first transmission assembly (40), at least part of the first transmission assembly (40) is movably arranged to drive the lifting and pressing part (210) of the overedger to carry out lifting action;

the second transmission assembly (50), at least part of the second transmission assembly (50) is movably arranged to drive the thread cutting component (220) of the overedger to perform falling action;

the first pushing component is used for being in transmission connection with the first transmission assembly (40) so as to drive the first transmission assembly (40) to move;

the second pushing component is used for being in transmission connection with a second transmission assembly (50) so as to drive the second transmission assembly (50) to move;

a drive member (10), the drive member (10) having a rotatable output shaft (11), the first and second urging members each being provided on the output shaft (11) to be rotated by the drive member (10).

2. The drive mechanism as recited in claim 1,

the first pushing component is a first transmission cam (20), and the first transmission cam (20) is sleeved on the output shaft (11) so as to push the first transmission assembly (40) to move through the first transmission cam (20); and/or

The second pushing component is a second transmission cam (30), and the second transmission cam (30) is sleeved on the output shaft (11) so as to push the second transmission assembly (50) to move through the second transmission cam (30).

3. The drive mechanism as recited in claim 2,

the outer peripheral surface of the first transmission cam (20) comprises a first outer peripheral surface part (21), and the first outer peripheral surface part (21) is used for being in contact with at least part of the first transmission assembly (40) to push the first transmission assembly (40) to move; wherein the first outer peripheral surface portion (21) has an initial end and a pushing end, the first outer peripheral surface portion (21) gradually departing from a central axis of the first transmission cam (20) from the initial end of the first outer peripheral surface portion (21) to the direction of the pushing end thereof; and/or

The outer peripheral surface of the second transmission cam (30) comprises a second outer peripheral surface part (31), and the second outer peripheral surface part (31) is used for being in contact with at least part of the second transmission assembly (50) to push the second transmission assembly (50) to move; wherein the second outer peripheral surface portion (31) has an initial end and a pushing end, and the second outer peripheral surface portion (31) gradually gets away from the central axis of the second transmission cam (30) from the initial end of the second outer peripheral surface portion (31) to the direction of the pushing end thereof.

4. The drive mechanism as recited in claim 2,

the outer peripheral surface of the first transmission cam (20) comprises a first outer peripheral surface part (21) and a third outer peripheral surface part (22), the third outer peripheral surface part (22) is a part of a first cylindrical surface, and the first outer peripheral surface part (21) is positioned on the outer side of the first cylindrical surface; the first outer peripheral surface portion (21) is used for contacting at least part of the first transmission assembly (40) to push the first transmission assembly (40) to move; and/or

The outer peripheral surface of the second transmission cam (30) comprises a second outer peripheral surface part (31), a fourth outer peripheral surface part (32) and a fifth outer peripheral surface part (33), the fourth outer peripheral surface part (32) is a part of a second cylindrical surface, the fifth outer peripheral surface part (33) is a part of a third cylindrical surface, and the third cylindrical surface is positioned on the outer side of the second cylindrical surface; the second outer peripheral surface portion (31) is located between the fourth outer peripheral surface portion (32) and the fifth outer peripheral surface portion (33), and the second outer peripheral surface portion (31) is used for contacting with at least part of the second transmission assembly (50) to push the second transmission assembly (50) to move.

5. The drive mechanism as recited in claim 2,

the first transmission assembly (40) comprises a first swinging rod (41) and a first contact part (42), and the second end of the first swinging rod (41) is connected with the pressure lifting component (210); the first contact part (42) is connected with the first end of the first swing rod (41) and is used for being in contact with the first transmission cam (20) so that the first transmission cam (20) pushes the first contact part (42) to move, and the first swing rod (41) drives the lifting component (210) to lift; and/or

The second transmission assembly (50) comprises a swinging component and a second contact part (52), the swinging component is connected with the second contact part (52) and the thread cutting component (220), and the second contact part (52) is used for being in contact with the second transmission cam (30) so that the second transmission cam (30) pushes the second contact part (52) to move, and then the swinging component is driven to swing to drive the thread cutting component (220) to fall.

6. The drive mechanism as recited in claim 5,

the first transmission assembly (40) further comprises a first elastic piece (43), and the first elastic piece (43) is connected with the first swing rod (41) and is used for being fixedly connected with an installation base so as to enable the first contact part (42) to be kept in contact with the outer peripheral surface of the first transmission cam (20) under the action of elastic force of the first elastic piece (43); and/or

The second transmission assembly (50) further comprises a second elastic piece (53), wherein the second elastic piece (53) is connected with the swinging component and is used for being fixedly connected with an installation base, so that the second contact part (52) is kept in contact with the outer peripheral surface of the second transmission cam (30) under the action of the elastic force of the second elastic piece (53).

7. The drive mechanism as recited in claim 6,

the first elastic piece (43) is a torsion spring, one elastic arm of the first elastic piece (43) is connected with the first swing rod (41), and the other elastic arm of the first elastic piece (43) is used for being fixedly connected with an installation foundation; and/or

The second elastic piece (53) is a torsion spring, one elastic arm of the second elastic piece (53) is connected with the swinging component, and the other elastic arm of the second elastic piece (53) is used for being fixedly connected with an installation base.

8. The drive mechanism as recited in claim 5, wherein the oscillating member comprises:

the first end of the second swing rod (51) is connected with the second contact part (52), and the second end of the second swing rod (51) is rotatably connected with the swinging block (55); the thread cutting component (220) is connected with the swinging block (55) so as to drive the swinging block (55) to swing when the second swinging rod (51) swings, and further drive the thread cutting component (220) to fall.

9. The driving mechanism according to claim 8, wherein the swinging block (55) is provided with a shaft portion (56), the second end of the second swinging rod (51) is provided with a transmission groove (514), and the second swinging rod (51) is rotatably sleeved on the shaft portion (56) through the transmission groove (514).

10. The drive mechanism according to claim 8, wherein the second oscillating bar (51) comprises:

a first segment, a second segment (512), and a sleeve portion (513), the sleeve portion (513) being located between the first and second segments (512), the first and second segments (512) each being connected with the sleeve portion (513); the first lever section is used for connecting with the second contact part (52), and the second lever section (512) is used for rotatably connecting with the swinging block (55); the sleeve portion (513) is rotatably sleeved on the supporting column (270), and the supporting column (270) is fixedly arranged on an installation foundation.

11. An overlock machine comprising a lifting member (210), a thread trimming member (220) and a drive mechanism (100), wherein the drive mechanism (100) is a drive mechanism according to any one of claims 1 to 10.

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